Spicy Spinach-Stuffed Mushrooms Recipe | Say Mmm

Ingredients

• 24 ounces whole white mushrooms
• 1 medium onion, diced
• 1 tablespoon butter
• 1 tablespoon olive oil
• 1/2 cup panko bread crumbs
• 1 10-ounce package frozen chopped spinach, thawed
• 1 8 ounce block cream cheese, softened
• 1/3 cup sour cream
• 1/2 cup Monterey Jack cheese, shredded
• 1/2 cup mild Cheddar cheese, shredded
• 8-12 dashes hot sauce (depending on taste)